784672434 has 320 divisors, whose sum is σ = 2388621312. Its totient is φ = 186624000.

The previous prime is 784672433. The next prime is 784672453. The reversal of 784672434 is 434276487.

784672434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 784672434.

It is not an unprimeable number, because it can be changed into a prime (784672433) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7768984 + ... + 7769084.

Almost surely, 2^784672434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 784672434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1194310656).

784672434 is an abundant number, since it is smaller than the sum of its proper divisors (1603948878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

784672434 is a wasteful number, since it uses less digits than its factorization.

784672434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 174 counting only the distinct ones).

The product of its digits is 903168, while the sum is 45.

The square root of 784672434 is about 28012.0051763525. The cubic root of 784672434 is about 922.3508067274.

The spelling of 784672434 in words is "seven hundred eighty-four million, six hundred seventy-two thousand, four hundred thirty-four".